MESON Chess Problem Database

Problem Display
PID: 243136 (r1b5/Qp1P1PnR/4k3/1p1p2K1/B2P4/B7/8/8 w - - 0 1)

Armeni, Alberto

Candela MT (Problemas), 2018

r1b5/Qp1P1PnR/4k3/1p1p2K1/B2P4/B7/8/8

#2

8 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sf5
      • 2.f8S#
    • 1...Sh5
      • 2.f8S#
    • 1...Se8
      • 2.dxe8Q#
      • 2.fxe8Q#
      • 2.fxe8R#
      • 2.f8S#
    • 1...b6
      • 2.d8S#
  • Tries
    • 1.Qb6+?
      • 1...Kxd7
        • 2.Bxb5#
        • 2.Qd6#
      • 1...Kxf7!
    • 1.dxc8Q+?
      • 1...Kxf7
        • 2.Qaxb7#
      • 1...Rxc8!
    • 1.d8Q?
      • threat
        • 2.Qe7#
      • 1...Sf5
        • 2.f8S#
      • 1...b4
        • 2.Qf6#
      • 1...Kxf7!
    • 1.f8Q?
      • threat
        • 2.Qe7#
      • 1...Sf5
        • 2.Qxf5#
        • 2.Qf6#
        • 2.Qf7#
        • 2.Qg8#
        • 2.d8S#
      • 1...b4
        • 2.Rh6#
        • 2.Qb6#
        • 2.Qf6#
        • 2.d8S#
      • 1...Kxd7!
  • Keys
    • 1.Qc5!
      • threat
        • 2.Qe7#
      • 1...Kxd7
        • 2.Qd6#
      • 1...Kxf7
        • 2.Qxd5#
      • 1...Sf5
        • 2.f8S#
      • 1...b4
        • 2.d8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • S(e);::P=S
    • P(d);::P=S
  • Tries
    • Try
      • Q(E);CHECK
      • Refutation
        • K(c);P_SPINS(e),S_FLIGHT,XP(G)
    • Try
      • P(F);CHECK,XB(g)
      • Vars
        • K(c);P_SPINP(d),P_SPINS(e),S_FLIGHT,XP(G)::QAR(E),XP(d)
      • Refutation
        • R(f);XQ(F)
    • Try
      • P(F);
      • Threat
        • QAR1(F)
      • Vars
        • S(e);::P=S
        • P(a);::QAR1(F)
      • Refutation
        • K(c);P_SPINP(d),P_SPINS(e),S_FLIGHT,XP(G)
    • Try
      • P(G);
      • Threat
        • QAR1(G)
      • Refutation
        • K(c);P_SPINP(a),P_SPINS(e),S_FLIGHT,XP(F)
  • Actual
    • Q(E);
    • Threat
      • QAR1(E)
    • Vars
      • K(c);P_SPINP(a),S_FLIGHT,XP(F)::QAR1(E)
      • K(c);P_SPINS(e),S_FLIGHT,XP(G)::QAB(E),XP(b)
      • S(e);::P=S
      • P(a);::P=S
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